Dangbei Projector
Member
After studying at home for such a long period of time, it is presumed that the glasses of the children in the family have risen sharply, and they have been squatting at home for nearly 2 months. And with the continuous development of information education, the blackboard in the past may be further reduced, and it will become a projector and a liquid crystal integrated machine for teaching. So can the projector protects eyes better than TV?
why the projector protects eyes than LCD
First, let's take a look at why the LCD screen is so harmful to human eyes. This has to mention "the first killer of the human eye"-Blu-ray. Blue light is the light with the highest visible light energy, and it has a higher frequency and more damage than the ultraviolet rays that we can't avoid in our daily lives.
The imaging principle of the LCD all-in-one used in the classroom is very simple. The large-size LCD screen panel forms an image, and then the light directly enters the human eye. Long-term viewing causes eye fatigue and dryness, and ciliary muscles are contracted, which leads to myopia, not like the projector protects eyes.
The projector is different from the LCD. The projector uses the same "reflective imaging principle" as natural light. The light is directed through the lens to the screen for imaging, and then reflected by the screen into the human eye, so that the light after the second pass is relatively soft. that makes projector protects eyes better than tv.
After seeing this, I believe everyone understands that projector protects eyes better, and the projector can be used in addition to studying at home. However, it should be noted that healthy of eyes is a comprehensive multi-factor behavior. In addition to paying attention to eyes, they also need to rest in time. Occasionally watching movies at night with a projector protects eyes is also a good choice.
why the projector protects eyes than LCD
First, let's take a look at why the LCD screen is so harmful to human eyes. This has to mention "the first killer of the human eye"-Blu-ray. Blue light is the light with the highest visible light energy, and it has a higher frequency and more damage than the ultraviolet rays that we can't avoid in our daily lives.
The imaging principle of the LCD all-in-one used in the classroom is very simple. The large-size LCD screen panel forms an image, and then the light directly enters the human eye. Long-term viewing causes eye fatigue and dryness, and ciliary muscles are contracted, which leads to myopia, not like the projector protects eyes.
The projector is different from the LCD. The projector uses the same "reflective imaging principle" as natural light. The light is directed through the lens to the screen for imaging, and then reflected by the screen into the human eye, so that the light after the second pass is relatively soft. that makes projector protects eyes better than tv.
After seeing this, I believe everyone understands that projector protects eyes better, and the projector can be used in addition to studying at home. However, it should be noted that healthy of eyes is a comprehensive multi-factor behavior. In addition to paying attention to eyes, they also need to rest in time. Occasionally watching movies at night with a projector protects eyes is also a good choice.
